Popper
noun
1 Popper
British philosopher (born in Austria) who argued that scientific theories can never be proved to be true, but are tested by attempts to falsify them (1902-1994).
synonyms: Karl Popper, Sir Karl Raimund Popper.
Polish: Popper, Sir Karl Raimund Popper, Karl Popper
2 popper
A container of stimulant drug (amyl nitrate or butyl nitrite).
3 popper
A container for cooking popcorn.
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